Dear David,
We have a technique set up for that, and there is a short, preliminary paper on
the subject
Revesz and others, Delta O-18 Measurements of Dissolved Oxygen gas Undergoing
Respiration in Contaminated Ground Water, IAEA International Symposium on
Isotope Techniques in Water Resources Development and Managemnent, Vienna, 10-14
May 1999.
It is not out yet, but I can send you a copy.
Regards:
Kinga
"David A. Mucciarone" wrote:

> Is anyone out there using IRMS either by inlet or continuous flow to
> analyze disolved N2, O2 and Ar in water?
>
> I have seen papers on this topic but they use a membrane inlet system
> attached to a quadrupole mass spec. However, I have not found methods that
> use IRMS. At the moment a group here is only interested in N2/Ar ratios,
> but I would appreciate information on any or all of the above.Thanks in
> advance for your input.
>
> Cheers,
>
> Dave
>
> ****************************************************************************
> David A. Mucciarone
> Laboratory Manager
> Stanford University
> Department of Geological and Environmental Sciences, 320
> Stanford, CA 94305-2115
> 650-723-0817 (office) 650-725-2199 (fax)
> Office - Green Earth Sciences Rm. 365
> Stanford Stable Isotope Laboratory - Green Earth Sciences Rm. 332 & 334.
> e-mail: [log in to unmask]
> WWW: http://pangea.stanford.edu/isotope/dam
> ****************************************************************************

--
Kinga Revesz
Chemist
U.S. Geological Survey
12201 Sunrise Valley Drive
Reston, VA 20192
MS 431
(703) 648-5865 Office
(703) 648-5274 Fax